Unalienable Rights are unalienable by one's existence, not by earning it, and are removed by extenuating circumstance. You, however, are saying one has to earn them which is not what an unalienable right is.Life never was an unalienable right. It has always been qualified. The only unalienable or unqualified right is freedom from torture. The fact that in some circumstances the taking of another's life is permissible, does not mean that murderers are free to kill anyone.
The fact that the Declaration of Independence was written during a time of capital punishment and not by idiots should tell you that your understanding of unalienable rights is wrong.
Again, you've dropped the rightful status of life as an unalienable right which is what murderers do.